Torque measuring lever with bearing pivot

Last crawled date: 4 years, 3 months ago

Remix of [A_R_B's]{https://www.thingiverse.com/A_R_B} torque measuring arm which has a pivot which can be attached to a board. Uses a 6903 30x17x7 cartridge bearing for the pivot. Sized to work with a Park Tools [DS-2]{https://www.parktool.com/product/tabletop-digital-scale-ds-2} digital scale which is 26mm high.
The plan is to mount the pivot to a board and have the scale to the right with the pointer in the center of the tray. Then a 13mm socket on the hex can be turned to read the breakaway force.
Also adjusted the length of the arm slightly - A_R_B's version is 200mm which is based on the conversion 1kgf = 10N. While that's close and more than close enough for the accuracy of this setup, mine is sized to 204.1mm based on 1kgf = 9.8 N. In practice you'll never really see that level of accuracy but I figured since I could, I'd do it anyway.
Sized to the 6903 bearing as that's what I had on hand that would clear the 13mm hex. Fusion 360 files included if you've got a different bearing on hand.